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USA Boys 10 & under - 50 M Back

These rankings show the swimmers' placement within the United States.
They are based on the swimmer's personal best, their current age category, and team; and are calculated from all the meets results.
For each swimmer, you can find the swimmer's ranking, their best time, the corresponding time standard, as well as how much faster the swimmer needs to be to reach the next level. The last columns provide information about the event they achieved this personal best.

Swimmer Rankings

Ranking Name Time Age Standard to Next Standard Team Date Meet
51 Marco Sun 39.14 10 AA Min AAA: 38.99 (+0.15s | 0.4%) Pleasanton Seahawks 06/07/2025 2025 06 07 CDST LC C B BB+ Meet
52 Declan Bannan 39.21 10 AA Min AAA: 38.99 (+0.22s | 0.6%) Rancho San Dieguito 07/24/2025 2025 SI LC AG CHAMPS
53 August Liao 39.31 10 AA Min AAA: 38.99 (+0.32s | 0.8%) Canyons Aquatic Club 07/24/2025 2025 CA SCS Summer A G Champs CANY
54 Aurelius Lien 39.41 9 AA Min AAA: 38.99 (+0.42s | 1.1%) Santa Clara Swim Club 07/31/2025 2025 Long Course Far Western Championship
55 Michael Levell 39.42 10 AA Min AAA: 38.99 (+0.43s | 1.1%) Brownell Talbot 05/09/2025 2025 SD SFST Ready For Long Course
56 Zachary Snyder 39.44 10 AA Min AAA: 38.99 (+0.45s | 1.1%) Madison Area YMCA Mariners 08/06/2025 2025 Summer Elite Showcase
57 Lucas Stocker 39.57 10 AA Min AAA: 38.99 (+0.58s | 1.5%) Coastal Machine Aquatics Club 07/23/2025 2025 CA SCS Summer A G Champs
58 Mason Lankford 39.57 10 AA Min AAA: 38.99 (+0.58s | 1.5%) Hydro Swim Club 07/10/2025 2025 FL Summer Age Group Championships
59 Maxwell Dean 39.58 10 AA Min AAA: 38.99 (+0.59s | 1.5%) Voltage Aquatics 07/18/2025 2025 LCM Summer Championships
60 Ryan Latronica 39.59 10 AA Min AAA: 38.99 (+0.60s | 1.5%) Hills Hurricane Swimming 07/31/2025 2025 Long Course Far Western Championship
61 Wayne Sun 39.59 10 AA Min AAA: 38.99 (+0.60s | 1.5%) Katy Aquatic Team For Youth 07/16/2025 2025 Texas Age Group Championships
62 Morgan Dasilva 39.65 10 AA Min AAA: 38.99 (+0.66s | 1.7%) Asphalt Green Unified Aquatics 08/06/2025 2025 Summer Elite Showcase
63 Kevin Kubasik 39.67 10 AA Min AAA: 38.99 (+0.68s | 1.7%) Mission Viejo Nadadores 07/25/2024 2024 CA SCS GWSC Summer A G Champs
64 Ray Yu 39.73 10 AA Min AAA: 38.99 (+0.74s | 1.9%) Aquazot Swim Club 07/24/2025 2025 CA SCS RAA Summer A G Champs
65 Matvey Fadeev 39.73 10 AA Min AAA: 38.99 (+0.74s | 1.9%) Issaquah Swim Team 07/24/2025 2025 PN LC 12 U Championships
66 Jonathan Nelson 39.82 10 AA Min AAA: 38.99 (+0.83s | 2.1%) Utah Valley Aquatics 07/17/2025 2025 UTAGS LC Championships
67 Riccardo Sardena 39.82 9 AA Min AAA: 38.99 (+0.83s | 2.1%) Swim Team of Placentia 06/12/2025 2025 CA SCS RAA June Age Group Championships
25 Back
38.23
38.23
50 Back
1.59
39.82
50 Back
39.82
68 Joseph Tomicic 39.84 10 AA Min AAA: 38.99 (+0.85s | 2.1%) Katy Aquatic Team For Youth 07/16/2025 2025 Texas Age Group Championships
69 Trevor Lam 39.85 9 AA Min AAA: 38.99 (+0.86s | 2.2%) Dare Aquatics 07/23/2025 2025 CA SCS Summer A G Champs
70 Russell Choy 39.94 10 AA Min AAA: 38.99 (+0.95s | 2.4%) Aquazot Swim Club 06/12/2025 2025 SCS June AG Invite @ La Mirada Armada
71 Harrison Millard 39.99 10 AA Min AAA: 38.99 (+1.00s | 2.5%) Bellingham Bay Swim Team 07/24/2025 2025 PN LC 12 U Championships
72 Mason Kim 40.02 10 AA Min AAA: 38.99 (+1.03s | 2.6%) Maywood Sparks Swim Team 07/24/2025 2025 CA SCS RAA Summer A G Champs
73 Arash Thokade 40.04 10 AA Min AAA: 38.99 (+1.05s | 2.6%) Unattached 07/31/2025 2025 Central Zone 14 Under Championship Mee
74 Finn McGuire 40.06 10 AA Min AAA: 38.99 (+1.07s | 2.7%) Swim Florida 06/20/2025 2025 GCST MARK MCCAW SUMMER
75 Winston Du 40.07 10 AA Min AAA: 38.99 (+1.08s | 2.7%) Aquajets Swim Team 07/23/2025 2025 MN NSAC 10 U LC State Championship
76 Colton Mueller 40.08 10 AA Min AAA: 38.99 (+1.09s | 2.7%) Coast Gaurd Blue Dolphins 07/11/2024 2024 VSI Regional Summer Awards
77 Allen Chen 40.18 10 AA Min AAA: 38.99 (+1.19s | 3.0%) Seattle Metropolitan Aquatic C 07/24/2025 2025 PN LC 12 U Championships
78 Johann Gomez Ugalde 40.19 10 AA Min AAA: 38.99 (+1.20s | 3.0%) Southwest Stars Swim Club 05/16/2025 2025 PA Long Course Invite
79 Alexander Fang 40.21 10 AA Min AAA: 38.99 (+1.22s | 3.0%) Reno Aquatic Club 07/31/2025 2025 Long Course Far Western Championship
80 Kennedy Whiting 40.22 10 AA Min AAA: 38.99 (+1.23s | 3.1%) Minnetonka Swim Club 07/23/2025 2025 MN NSAC 10 U LC State Championship
81 Javier Cabral 40.23 10 AA Min AAA: 38.99 (+1.24s | 3.1%) Unattached 08/06/2025 2025 Western Zone Age Group Championships
82 Zachary Zeng 40.40 10 AA Min AAA: 38.99 (+1.41s | 3.5%) Waterloo Swimming 07/10/2025 2025 ST AAAA STAGS LC Championship
83 Andrew Lin 40.43 10 AA Min AAA: 38.99 (+1.44s | 3.6%) Bellevue Club Swim Team 07/24/2025 2025 PN LC 12 U Championships
84 Gleb Nikishin 40.48 10 AA Min AAA: 38.99 (+1.49s | 3.7%) SwimRight Team 01/17/2026 2026 Azura Winter Open LCM Invite
85 Declan Benton 40.52 10 AA Min AAA: 38.99 (+1.53s | 3.8%) Sawtooth Aquatic Club 05/16/2025 2025 Spring Fling LC Invitational
86 Graham Greenblatt 40.59 10 AA Min AAA: 38.99 (+1.60s | 3.9%) Swim Streamline at Northampton 07/16/2025 2025 Texas Age Group Championships
87 Crosby Coleman 40.63 10 AA Min AAA: 38.99 (+1.64s | 4.0%) Rochester Swim Club 05/09/2025 2025 SD SFST Ready For Long Course
88 Mason Ryu 40.71 10 AA Min AAA: 38.99 (+1.72s | 4.2%) Klg Sports Swim Team 07/24/2025 2025 CA SCS RAA Summer A G Champs
89 Mason Landon 40.71 10 AA Min AAA: 38.99 (+1.72s | 4.2%) Unattached 07/31/2025 2025 Central Zone 14 Under Championship Mee
90 Rory Cullen 40.75 10 AA Min AAA: 38.99 (+1.76s | 4.3%) Sarasota Sharks 07/10/2025 2025 FL Summer Age Group Championships
91 Lucas Pan 40.76 9 AA Min AAA: 38.99 (+1.77s | 4.3%) Santa Clara Swim Club 07/31/2025 2025 Long Course Far Western Championship
92 Nicholas Liu 40.76 9 AA Min AAA: 38.99 (+1.77s | 4.3%) Alto Swim Club 07/31/2025 2025 Long Course Far Western Championship
93 Clayton Chester 40.91 10 AA Min AAA: 38.99 (+1.92s | 4.7%) Heartland Swim Assoc 07/24/2025 2025 SI LC AG CHAMPS
94 Shunsuke Suzuki 40.93 10 AA Min AAA: 38.99 (+1.94s | 4.7%) Palo Alto Stanford Aquatics 07/31/2025 2025 Long Course Far Western Championship
95 Preston Tran 40.99 10 AA Min AAA: 38.99 (+2.00s | 4.9%) Irvine Novaquatics 06/12/2025 2025 June Age Group Invite
96 Benjamin Du 41.05 10 AA Min AAA: 38.99 (+2.06s | 5.0%) Santa Clara Swim Club 05/23/2025 Zone 1 South May Firecracker 500
97 Daniel Thorpe 41.07 9 AA Min AAA: 38.99 (+2.08s | 5.1%) Aquajets Swim Team 07/23/2025 2025 MN NSAC 10 U LC State Championship
98 Benjamin Balmaceda 41.09 10 AA Min AAA: 38.99 (+2.10s | 5.1%) Alamo Area Aquatic Association 07/10/2025 2025 ST AAAA STAGS LC Championship
99 Eliott Jackson 41.10 10 A Min AA: 41.09 (+0.01s | 0.0%) Team Eugene Aquatics 07/12/2025 2025 OSI Arena Summer LC 10 U Championships
100 Jack Armbruster 41.12 10 A Min AA: 41.09 (+0.03s | 0.1%) San Clemente Aquatic Team 07/24/2025 2025 CA SCS RAA Summer A G Champs

Disclaimer: This Website is not affiliated with USA Swimming or any Local Swim Committee. The rankings and times displayed on this website are unofficial and should not be viewed as such. We update our information regularly, but we cannot guarantee that the data is accurate, timely, or complete. The only purpose of this website is entertainment. None of the information here should be used for university admission applications.